Apparatus for molding.



C. G. ROBINSON.

APPARATUS FOR MOLDING.

APPLICATION FILED APR.2, m2.

1,l%6,736n Patented July 13, 1915.

2 SHEETS-SHEET l- WITNESSES w dim a W I xggagg COLUMBIA PLANOGRAPH 50.,wAsHlNu'r0N, D. c-

C. G. ROBINSON.

APPARATUS FOR MOLDING.

APPLICATION FILED APR.2,1912.

1,146,736. Patented July 13, 1915.

2 SHEETS-SHEET 2- WITNESSES COLUMBIA PLANOGRAPH co.,w,\s!1ma'roN. D4 cCHARLES GQRO BINSON, 0F LEXVISTOWN, PENNSYLVANIA.

AE'PARATUS FOR Momma.

To all whom it may concern:

Be it known that 1, CHARLES G. ROBIN- SON, a citizen of the UnitedStates, residing at Lewistown, in the county offMifllin and State ofPennsylvania, have invented a new and useful Improvement in Apparatusfor Molding, of which improvementthe follow ing is a specification.

My invention relates to improvements in the art of molding and inapparatus applicable thereto.

The invention is particularlyapplicable to the molding of truck and bodybolsters; it is, however, applicable'to the production of all classes ofcastings.

The object of my invention is (to produce a methodandapparatusapplicable to the production of castings and particularly tothe production of truck and body bolsters, whereby time and labor areminimized and large tonnage produced, and to this purpose my inventionconsists in the novel steps and operations hereinafter set forth..

In carrying out or practising my improved method I use the apparatushereinafter more specifically described, reference being had to theaccompanying drawings forming parthereof, in whichi a Figure 1 is'a planview of a portion of my improved apparatus. Fig. 2 is an enlarged detailof one of'thepartsthereof. Fig. 3 is a side elevation of theapparatus.In carrying out the method the cope 1 and drag 2 of the flask used areplaced upon a match plate?) on Which'the pattern 4: has been secured.The flask is preferably hinged, i. e. the cope is hingedto theidrag;"Placing the. cope and drag onfthematch plate upon which the pattern issecured enables the ramming of the mold at one ioperation. The methodmay be described as consisting of the following distinct steps oroperations: First, placing on the match plate'the hinged flask, z. e.the cope 1 and drag Q'which'are supported on the stationary supportwhich in this form of apparatus comprises a bar or plate 6-6 arranged oneach side 0f the frame 7 longitudinally thereof,-the match plate beingwider thanithe frame. The match plate with the flask thereonisfcan ,riedforwardby the endless conveyerB until the same is brought to the rammingdevice 9 which is indirect alinement with the sand bin 10 from which therequired amount of sand is automatically dumped or fed into theSpecification of Letters Patent.

Patented any is, 1915.

Application filed April 2, 1912. Serial No. 687,976.

flask. is used but I prefer to grind all the sand used in thisapparatus. After the'flask has been rammed and thoroughlytamped by theramming machine and bumped, a bottom plate 11 is put on the drag half ofthe flask and securely bolted thereon. Any usual jarring machine may beused. After the mold has been rammed and bumped as here'- inbeforedescribed, it is carried forward to the device 12, which reverses theflask, 2'. e. reverses the match plate so as to bring it to the upperside of the flask. The reversing mechanism employed consists of areceptacle 13 having compartments 14-15 longitudinally thereof in eachside, the said receptacle. being mounted upon a centrally disposed shaft16, whereby when the flask is inserted in one of said compartments asshown in Fig. 3 and the shaft rotated automatically or manually, theflask is reversed, a. 6. turned upside down. After this operation theflask is removed from the compartment of said receptacle and carried bythe conveyer toward and upon the table ofthe stripping machine 17. Thismachine automatically takes hold of the match plate and attaches toopposite corners thereof a vibrator whereby the match plate and patternssecuredthereon are removed from the mold,

. air being used'to accomplish this operation.

After the withdrawal of-the patterns we have a complete mold which bythe action of the conveyer is carried forward, the match plate beingsuspended in the stripping machine as shown in Fig.3. The mold iscarried forward to the conventional form of finishing table (not shown)where the cores are inserted and any necessary hand work performed,after which the flask is carried forward, the cope half thereof havingrollers 18 which engage upon the inclines 19 and cause the same to swingon its hinged connection as the drag half of the flask is being carriedforward horizontally as shown in Fig. 2.

The cope rides on the rollers thereof until it arrives at the apex ofthe incline, in so doing engaging against a guide or stop trig ger 20which being forced forward causes the roller totravel up through theguide 21 until it arrives into the vertical passage therein upon whichthe trigger is returned to its normal position. ,The continued for= wardmovement of'the drag then causes the It is immaterial what kind of sandcomplete reversal-ofSthe cope portion of the flask thereby closingthesame, after which the cope and drag are bolted in the usual manner andare in position-for pouring which may be performed at thispoint o-ftheoperation or the flask may be removed to a pouring floor.

The conveyer is provided With dogs Which engage the rear edge of thematch plate or flask whereby the same is moved for- Ward.

In practising my invention, I preferably permit the casting to remain inthe drag until icooled as this not only prevents the casting frombecoming crooked While cooling, "but also takes care of shrinkage.

The advantages of my invention and its capacity to produce largeitonnagein .a minimum of time will be obvious "toithose skilled in theart.

The conveyor may either have continuoils or an intermittent movement,accordingfto thes'kill of the operators, and with thepresentconstructionthe different operati'ons "would be manually performed,although it "would be entirely Within the scope of rthe invention toprovide automatic means for actuating :the different devices dopertorm'the various steps. i

-Havingdescribed my invention, what I claim "and desire to secure byLetters Pat ent is:- a r -=1. tin-1a device of 'the :character 1described, the combination of a (conveyer, a match plateupon theconveyer, said match :plate being rprovide'dviith a pattern, afiask'comprising hinged :cope and 'drag 'sectionswhich rest 'upon-"thematchvplate, :means ifor rfilling the :fiask sections with sand anditamping "the same in position, means "for inverting the flask sectionsaip on the iconveyer, means for removing :the match plate, and means forswinging one flask section over :upon the opposite flask section.

"2. Ina device of'the character described, the combination ofzaconveyer, aunatch plate upon ithe conveyer, said match plate beingprovided 'With a pattern, a fla sk comprising complemented sectionsvvhi'ch rest upon the match plate, :means L fer lfilling ithe flasksections 'with sand and tamping 'the same in position, aneans' for 1inverting the flask sectlOIIS upon it'he conveyer and removing ithe:match plate therefrom, and :means'forPbrmging'ithe tvvo complementa'lflflSk sectionstogether into operative M position.

In a device *of the .character .idescribed,

ithe icombinaition of :a :conveyer, a match plate ELIPOII ithe'conveyer, comp'lemental sections match :plate, means :for filling *the:flask sections with sand :and itampin'g :the m i :position therein, i aswinging reversin frame :a: flask com-prising which rest upon 'theprovided with arpocket arranged in t lle pa'th ofthe flask sections andmatch plate to :re-

"the conveyer in an inverted "position, means for removing the matchplate, and means for bringing the flask sections together in operativerelation.

4. In a device of the character described, the combination of aconveyer, a match plate upon the conveyer, said match plate beingprovided Witha pattern, a \flasklcomprising "hinged cope and idragsections Which rest'upon the match plate, means for filling the flasksectionswith sand and'tamping the vsamein position therein, a swingingreversing xframe provided with a :pocket arranged in the path of theflask sections and match plate to receive the same, said reversingftra'me serving to dl ft the flask sections and :match plate itrom theconveyer and again deposit the same upon ith'econveyer in aniinvertedposition, means for removing the matchg-plate: from the flask:sections,-.-and cam actuated means for automatically swinging one flasksectionover uponitheopposi'te fiask section. I I

5. In a device oifl the character described, the combinationoi aconveyer, aimatch plate uponithe conveyer, esaid match plate beingprovided t with a" pattern, a flask icom prising hinged cope and dragsections which :rest upon -1' the match rplate, means 'for :filling theflask sections with sand and htamping the same in position itherein,means for inverting the flask sections upont'the conveyer, :means :forremoving the ini-atchzplate 'ifiI'OIIl rthevflask sections, a:guid'eimember-projecting ffrom one of the flask sectionsyan-dla cam-;surface arrangediinithe path of the said guidejzmemher for"coiiperation ltherewithrto :svvging one of the fiask 'sections overupon fiask 'section.

6.;"Inradevice of the character'described, the combination of conveyer,amatch plate resting'upnn the'conveyer an'drprovidedavith a pattern, aflask '1 comprising hinged cope and drag sectionsiwhichrrest uponztheima'tch plate, *zmeans. ifor filling ithe flask :sections with rsandan'd:tamping theisame in :position therein, :means for inverting the'flaskrseo itions supon the rconveyer, means 'dr'or v:removingmhewmatchplate therefrom, a guide-"member mp rejecting from one -of theiflasksections, a i'dozublef inclined roam surtace arranged :in the wpathaofthe guideimember, andwa trigger at the :apexxof the double :incl-inedcam sur- *fa'ce, :the:said f-double inclined cam surface and trigger.cooperatingwithivthe 'guidememher to automatically 1 :swingwne :of theeflask sections over iuponrthe-oppo'site flask section.

"/7. A device of #the 2 character describeid, in-clitding a FCOIIVQZYGI'a iflask :carriediby :the conveyor i and comprising hinged sections, aguide member projecting -from :one of the 1 ask sections, and i a roam:surface arranged 2105 sthe opposite in the path of the guide member forautomatically swinging the said flask section over upon the oppositeflask section.

8. In a device of the character described, the combination of aconveyer, a flask mounted upon the conveyer and comprising a pair ofhinged complemental sections, a guide member projecting from one of theflask sections a double inclined cam surface arranged in the path of theguide member, and switch means at the apex of the double inclinedsurface for cooperation with the double inclined surface and guidemember upon the flask section for swinging the said flask section overupon the opposite flask section.

9. A device of the character described including a conveyer, a flaskmounted upon the conveyer and comprising a pair of hinged sections, aguide member projecting from one of the flask sections, a doubleinclined surface arranged in the path of the guide member, a verticalguideway over the apex of the double inclined surface, a swingingtrigger at theapex of the double inclined surface for directing theguide member between the vertical guideway and the opposite sides of thedouble inclined surface, said double inclined surface and swingingtrigger serving to cooperate with the guide member upon the flasksection to automatically swing the said flask section over upon theopposite flask section. I

10. In a device of the character described, the combination of aconveyer, a series of flasksupon the conveyer, each of the flaskscomprising hingedly connected drag and cope sections, a match plate foreach of the flasks, said match plates carrying patterns and having therespective flasks placed thereon, means for charging the flasks withsand as they are advanced by the conveyer, means for tamping the samewithin the flasks, reversing mechanism adapted to successively act uponthe flasks to invert the same upon the conveyer, a stripping deviceadapted to act successively upon the flasks to remove the match platesand patterns therefrom, and a device comprising an incline andcooperating guide to swing the cope sections of the flasks upon the dragsections of the flasks, substantially as set forth.

In testimony whereof, I have hereunto signed my name in the presence oftwo subscribing Witnesses.

CHARLES G. ROBINSON.

In the presence of E. W. HOLLINGER, RHonA R. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

